阅读说明：本技术 一种丝化机密封结构 (Filamentation machine sealing structure ) 是由 许银川 来宪魁 许超峰 许要锋 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种丝化机密封结构,包括轴承密封机构和机械密机构；轴承室密封机构,包括轴承室、轴端压盖和轴承挡环；轴端压盖将轴承室和轴承挡环连接；轴端压盖与轴承室接触处、轴承挡环内端面与主轴接触处设有静密封结构,轴承挡环和轴端压盖之间设有防溢密封结构,在轴端压盖和轴承挡环之间的防溢密封结构具备多重防护结构,甩油防护、油膜防护、Z形密封防护和充气排水密封,能防止润滑油泄露以及机械密封冲洗水进入轴承室。机械密封上弹性密封结构能保证动盘与机械密封之间在间歇区间内都能密封。本发明既能防止润滑油泄露又能防止机械密封冲洗水进入轴承室造成传动总成锈蚀损坏,起到很好的密封效果,而且机械密封使用寿命更长,维修率低。(The invention discloses a filamentization machine sealing structure, which comprises a bearing sealing mechanism and a mechanical sealing mechanism; the bearing chamber sealing mechanism comprises a bearing chamber, a shaft end gland and a bearing baffle ring; the shaft end gland connects the bearing chamber and the bearing retaining ring; the anti-overflow sealing structure between the shaft end gland and the bearing baffle ring is provided with multiple protection structures, and oil throwing protection, oil film protection, Z-shaped sealing protection and inflation drainage sealing can prevent lubricating oil leakage and mechanical sealing flushing water from entering the bearing chamber. The elastic sealing structure on the mechanical seal can ensure that the space between the movable disc and the mechanical seal can be sealed in an intermittent interval. The invention can prevent lubricating oil from leaking and prevent mechanical seal flushing water from entering the bearing chamber to cause corrosion damage of the transmission assembly, thereby playing a good sealing effect, and the mechanical seal has longer service life and low maintenance rate.)

1. A filamentization machine sealing structure which characterized in that: comprises a bearing sealing mechanism and a mechanical sealing mechanism; the bearing chamber sealing mechanism comprises a bearing chamber (1), a shaft end gland (2) and a bearing baffle ring (3); the bearing chamber (1) is sleeved on a bearing (19) of the main shaft (18), the bearing baffle ring (3) is sleeved on the main shaft (18) and is in contact with the end face of the bearing (19), and the bearing baffle ring (3) rotates along with the main shaft (18); the shaft end gland (2) is connected with the bearing chamber (1) and is matched with the bearing baffle ring (3), and the bearing baffle ring (3) rotates relative to the shaft end gland (2); a static sealing structure is arranged at the contact position of the inner end surface of the bearing baffle ring (3) and the main shaft, and an anti-overflow sealing structure is arranged between the bearing baffle ring (3) and the shaft end gland (2);

the mechanical sealing mechanism comprises a mechanical seal (4) and a transition flange (5), wherein a static part of the mechanical seal (4) is connected with the shaft end gland (2) through the transition flange (5); and the rotating part of the mechanical seal (4) is connected with the bearing baffle ring (3).

2. The filamentization machine sealing structure according to claim 1, characterized in that: the anti-overflow sealing structure comprises an oil throwing component, wherein the oil throwing component comprises an oil throwing groove (6) on the outer wall of the bearing retaining ring (3), and an oil throwing cavity is formed by the oil throwing groove (6), the side wall of the shaft end gland (2) and the inner wall of the bearing chamber (1).

3. The filamentization machine sealing structure according to claim 2, characterized in that: the anti-overflow sealing structure also comprises an oil film sealing component, and the oil film sealing component is positioned on one side of the oil throwing component far away from the bearing; the oil film sealing component comprises a labyrinth sealing structure (7) and the outer wall of the bearing retaining ring (3), the labyrinth sealing structure is arranged on the inner wall of the shaft end gland (2), and an oil film cavity is formed between the labyrinth sealing structure and the outer wall of the bearing retaining ring (3).

4. The filamentization machine sealing structure according to claim 2 or 3, characterized in that: the anti-overflow sealing structure further comprises an oil return component, the oil return component comprises at least one oil throwing groove I (8) and an oil return groove (9), the oil return groove (9) is formed in the inner wall, opposite to the bearing retaining ring (3), of the shaft end gland (2), the oil return groove (9) is provided with an oil return hole (10), and the oil return hole (10) is communicated with the inner cavity of the bearing chamber (1); the oil throwing groove I (8) is arranged on the outer wall of the bearing retaining ring (3), and the oil throwing groove I (8) corresponds to the oil return groove (9).

5. The filamentization machine sealing structure of claim 4, wherein: the anti-overflow sealing structure further comprises a Z-shaped sealing component, the Z-shaped sealing component comprises a Z-shaped sealing ring (20) and a sealing installation groove (11), the sealing installation groove (11) is arranged on the inner wall of the shaft end gland (2), the sealing installation groove (11) and the outer wall of the bearing baffle ring (3) form a Z-shaped sealing cavity, and the Z-shaped sealing ring (20) is installed in the Z-shaped sealing cavity.

6. The filamentization machine sealing structure according to claim 1 or 5, characterized in that: an air charging and water discharging sealing structure is arranged between the shaft end gland (2) and the mechanical seal (4).

7. The filamentization machine sealing structure of claim 6, wherein: the inflation and drainage sealing structure comprises an air inlet hole (12), a ventilation channel (13) and an air water outlet hole (14); the air inlet hole (12) and the air water outlet hole (14) are respectively arranged on the shaft end gland (2), the air inlet hole (12) and the air water outlet hole (14) are communicated with a ventilation channel (13), and the ventilation channel (13) is formed by a gap between the side wall of the shaft end gland (2) and the side wall of the transition flange (5); and the vent channel (13) is communicated with the Z-shaped sealing cavity.

8. The filamentization machine sealing structure of claim 7, wherein: the lip of the Z-shaped sealing ring (20) faces the vent channel (13).

9. The filamentization machine sealing structure according to claim 1, 2, 3, 5, or 7, wherein: mechanical seal is equipped with elastic sealing structure with the driving disk junction, elastic sealing structure includes sealing washer I (15), at least one sealing washer II (16) and sealing washer cutting ferrule (17), and the driving disk inner wall is installed in sealing washer I (15), and sealing washer cutting ferrule (17) float to be installed at mechanical seal's rotating part and inject sealing washer II (16) in mechanical seal's rotating part, and sealing washer cutting ferrule (17) and sealing washer I (15) contact.

Technical Field

The invention belongs to the technical field of mechanical sealing, and particularly relates to a sealing structure of a threading machine for a thread rolling machine.

Background

A transmission assembly in the thread rolling machine provides power for equipment, and the transmission reliability is a key factor for ensuring the normal operation of the equipment. The transmission assembly needs to lubricate and cool the bearing in the running process. The lubrication oil is then fed into the bearing chamber, and consideration is given to how the lubrication oil in the drive assembly is sealed. At present, the sealing ring is widely applied to sealing, and lubricating oil leakage often occurs.

And equipment is at the operation in-process, by the feed inlet feeding in the place ahead, divides the silk in grinding the room, consequently still need be used for sealed come to equipment and transmission between sealed, former equipment structure adopts the packing to seal, and the packing seals the life-span short, needs often to maintain the change. Equipment need dismantle the filamentation room when changing the packing, and the anterior mill of main shaft, mill seat are changed after taking out main shaft whole, and the change process is wasted time and energy, influences production.

Disclosure of Invention

In view of the above-described deficiencies in the prior art, the present invention provides a filamentization machine sealing structure.

The technical scheme adopted by the invention is as follows:

a filamentization machine sealing structure comprises a bearing sealing mechanism and a mechanical sealing mechanism; the bearing chamber sealing mechanism comprises a bearing chamber, a shaft end gland and a bearing baffle ring; the bearing chamber is sleeved on a bearing of the main shaft, the bearing retaining ring is sleeved on the main shaft and is contacted with the end surface of the bearing, and the bearing retaining ring rotates along with the main shaft; the shaft end gland is connected with the bearing chamber and matched with the bearing retaining ring, and the bearing retaining ring rotates relative to the shaft end gland; the static sealing structure is arranged at the contact part of the shaft end gland and the bearing chamber, the static sealing structure is arranged at the contact part of the inner end surface of the bearing retaining ring and the main shaft, and the static sealing structure is realized by arranging a sealing ring, so that not only can lubricating oil be prevented from leaking, but also mechanical sealing water can be prevented from entering the bearing chamber; an anti-overflow sealing structure is arranged between the bearing baffle ring and the shaft end gland; the anti-overflow seal structure can prevent bearing lubricating oil from revealing.

The mechanical sealing mechanism comprises a mechanical seal and a transition flange, and a static part of the mechanical seal is connected with the shaft end gland through the transition flange; and mechanical seal's rotating part is connected with bearing retainer ring, and mechanical seal realizes the sealed between equipment and the drive mechanism, and mechanical seal compares in the sealed operation of packing moreover and stabilizes, and long service life need not the maintenance under the general condition.

As a preferred scheme of the invention, the anti-overflow sealing structure comprises an oil throwing member, the oil throwing member comprises an oil throwing groove on the outer wall of the bearing retaining ring, an oil throwing cavity is formed by the oil throwing groove, the side wall of the shaft end gland and the inner wall of the bearing chamber, lubricating oil in the oil throwing groove is thrown to the oil throwing cavity when rotating, and the oil throwing cavity is positioned in the bearing chamber.

As a preferable scheme of the invention, the anti-overflow sealing structure further comprises an oil film sealing member, and the oil film sealing member is positioned on one side of the oil throwing member away from the bearing; the oil film sealing component comprises a labyrinth sealing structure and a bearing retaining ring outer wall, the labyrinth sealing structure is arranged on the inner wall of the shaft end gland, an oil film cavity is formed between the labyrinth sealing structure and the bearing retaining ring outer wall, lubricating oil overflowing from the oil throwing groove enters the oil film cavity to form an oil film, and the lubricating oil in the bearing chamber can be prevented from continuously flowing out.

As a preferred scheme of the invention, in order to prevent the oil film from losing efficacy, the anti-overflow sealing structure further comprises an oil return component, wherein the oil return component comprises at least one oil throwing groove I and an oil return groove, the oil return groove is formed in the inner wall of the shaft end gland, which is opposite to the bearing retaining ring, and is provided with an oil return hole, and the oil return hole is communicated with the inner cavity of the bearing chamber; get rid of oil groove I and set up at the bearing and keep off ring outer wall and get rid of oil groove I and correspond with the oil return tank, get rid of oil groove I and set up to two, lubricating oil gets into gets rid of in the oil groove I after the oil film became invalid, and in the operation bearing keeps off the ring rotation and gets rid of the oil return tank with the lubricating oil that gets rid of in the oil groove I, flows to the bottom in the oil return tank and returns to in the bearing room from the oil gallery.

The lubricating oil which breaks through the oil film and enters the oil throwing groove I is thrown into the oil return groove, and then returns to the bearing chamber from an oil return hole of the oil return groove;

as a preferred scheme of the present invention, in order to better prevent the leakage of the lubricating oil and the entry of the mechanical washing water into the bearing chamber, the anti-overflow sealing structure further comprises a Z-shaped sealing member, wherein the Z-shaped sealing member comprises a Z-shaped sealing ring and a sealing installation groove, the sealing installation groove is arranged on the inner wall of the shaft end gland, the sealing installation groove and the outer wall of the bearing retainer ring form a Z-shaped sealing cavity, the Z-shaped sealing ring is installed in the Z-shaped sealing cavity, the lip of the Z-shaped sealing ring faces outwards, and the Z-shaped sealing ring prevents the leakage of the lubricating oil and simultaneously prevents.

As a preferred scheme of the invention, in order to enable the Z-shaped sealing ring to be sealed more tightly and accelerate the discharge of washing water, an inflatable drainage sealing structure is arranged between the shaft end gland and the mechanical seal; the inflatable drainage sealing structure comprises an air inlet hole, a ventilation channel and an air and water exhaust hole; the air inlet hole and the air water outlet hole are respectively arranged on the shaft end gland, the air inlet hole and the air water outlet hole are communicated with a ventilation channel, and the ventilation channel is formed by a gap between the side wall of the shaft end gland and the side wall of the transition flange; the vent channel is communicated with the Z-shaped sealing cavity, and the lip of the Z-shaped sealing ring faces the vent channel; in the operation process, gas enters the ventilation channel from the gas inlet and is discharged from the gas-water discharge hole to form a gas path, and the ventilation channel is communicated with the Z-shaped sealing cavity, and the lip of the Z-shaped sealing ring faces the ventilation channel, so that the charged gas can extrude the Z-shaped sealing ring to be more tightly sealed in normal operation. When the mechanical seal is broken, the leakage of the flushing water can enter the ventilation channel and can rapidly discharge the hole from the gas-water outlet under the punching of the gas.

As a preferable scheme of the invention, because the connection part of the main shaft and the movable disk is a conical surface, the movable disk needs to be provided with power through large interference fit, when the movable disk is installed, the movable disk needs to be pressed into the main shaft through hydraulic pressure;

because the driving disk volume of impressing is interval value for the clearance between driving disk and mechanical seal becomes unsettled, so in order to ensure to seal all the time, mechanical seal is equipped with elastic sealing structure with the driving disk junction, elastic sealing structure includes sealing washer I, at least one sealing washer II and sealing washer cutting ferrule, and sealing washer I installs at the driving disk inner wall, and the sealing washer cutting ferrule floats and installs at mechanical seal's rotating part and inject sealing washer II in mechanical seal's rotating part, and the sealing washer cutting ferrule contacts with sealing washer I, and sealing washer I and sealing washer II all adopt O shape sealing washer.

The invention realizes the prevention of the leakage of lubricating oil through the sealing structures arranged among the shaft end gland, the bearing chamber and the bearing baffle ring, the static seal is arranged between the shaft end gland and the bearing chamber, the static seal is arranged at the contact part of the bearing baffle ring and the main shaft to prevent the leakage of the lubricating oil to a certain degree, the anti-overflow sealing structure arranged between the shaft end gland and the bearing baffle ring can have a multiple protection structure, the lubricating oil is firstly thrown back into the bearing chamber through the oil throwing groove, if the oil throwing groove cannot completely treat the lubricating oil and enters the labyrinth sealing structure, the lubricating oil can form an oil film with the bearing baffle ring, the lubricating oil is prevented from being continuously leaked, if the oil film fails, the lubricating oil flows back into the bearing chamber through the oil throwing groove I and the oil return groove, and the Z-shaped sealing ring and the air charging and. The elastic sealing structure arranged on the mechanical seal can ensure that the space between the movable disc and the mechanical seal can be sealed in an intermittent interval. The invention can prevent lubricating oil from leaking and prevent mechanical seal flushing water from entering the bearing chamber to cause corrosion damage of the transmission assembly, thereby playing a good sealing effect, and the mechanical seal has longer service life and low maintenance rate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a partially enlarged view of a portion B in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Example (b):

a filamentization machine sealing structure, as shown in figure 1, comprises a bearing sealing mechanism and a mechanical sealing mechanism, wherein the mechanical sealing mechanism comprises a mechanical seal 4 and a transition flange 5, and the static part of the mechanical seal 4 is connected with a shaft end gland 2 through the transition flange 5; and the rotating part of the mechanical seal 4 is connected with the bearing retaining ring 3, the mechanical seal realizes the sealing between the equipment and the transmission mechanism, and the mechanical seal is stable in operation compared with packing seal, and long in service life and does not need maintenance under ordinary conditions.

The bearing chamber sealing mechanism comprises a bearing chamber 1, a shaft end gland 2 and a bearing baffle ring 3; the bearing chamber 1 is sleeved on a bearing 19 of the main shaft 18, the bearing retaining ring 3 is sleeved on the main shaft 18 and is in contact with the end face of the bearing 19, and the bearing retaining ring 3 rotates along with the main shaft 18; the shaft end gland 2 is connected with the bearing chamber 1 and is matched with the bearing retaining ring 3, and the bearing retaining ring 3 rotates relative to the shaft end gland 2; an O-shaped sealing ring is arranged at the contact position of the shaft end gland 2 and the bearing chamber 1, an O-shaped sealing ring is also arranged at the contact position of the inner end surface of the bearing baffle ring 3 and the main shaft, and the O-shaped sealing ring type static sealing structure can prevent lubricating oil from leaking and prevent mechanical sealing water from entering the bearing chamber.

Because the bearing baffle ring rotates along with the main shaft and the shaft end gland is static along with the bearing chamber, an anti-overflow sealing structure is arranged between the bearing baffle ring 3 and the shaft end gland 2 in order to realize rotary sealing; the anti-overflow seal structure can prevent bearing lubricating oil from revealing.

The anti-overflow sealing structure comprises an oil throwing component, an oil film sealing component, an oil return component and a Z-shaped sealing component as shown in figures 1 and 2.

The oil throwing component comprises an oil throwing groove 6 on the outer wall of the bearing baffle ring 3, an oil throwing cavity is formed by the oil throwing groove 6, the side wall of the shaft end gland 2 and the inner wall of the bearing chamber 1, lubricating oil in the oil throwing groove is thrown to the oil throwing cavity when rotating, and the oil throwing cavity is positioned in the bearing chamber.

The oil film sealing component is positioned on one side of the oil throwing component far away from the bearing; the oil film sealing component comprises a labyrinth sealing structure 7 and the outer wall of the bearing retaining ring 3, the labyrinth sealing structure is arranged on the inner wall of the shaft end gland 2, an oil film cavity is formed between the labyrinth sealing structure and the outer wall of the bearing retaining ring 3, lubricating oil overflowing from the oil throwing groove enters the oil film cavity to form an oil film, and the lubricating oil in the bearing chamber can be prevented from continuously flowing out.

In order to prevent oil film failure, the oil return component comprises at least one oil throwing groove I8 and an oil return groove 9, the oil return groove 9 is arranged on the inner wall of the shaft end gland 2 opposite to the bearing baffle ring 3, the oil return groove 9 is provided with an oil return hole 10, and the oil return hole 10 is communicated with the inner cavity of the bearing chamber 1; get rid of oil groove I8 and set up at the bearing and keep off the ring 3 outer wall and get rid of oil groove I8 and correspond with oil return tank 9, get rid of oil groove I8 and set up to two, lubricating oil gets into gets rid of in oil groove I8 after the oil film became invalid, and bearing keeps off ring 3 and rotates the lubricating oil that gets rid of in the oil groove I8 when operation and gets rid of the oil return tank in, flows to the bottom in the oil return tank and returns to the bearing room from the oil gallery.

The lubricating oil which breaks through the oil film and enters the oil throwing groove I8 is thrown into the oil return groove, and then returns to the bearing chamber from an oil return hole of the oil return groove;

for better preventing that lubricating oil from revealing and mechanical sparge water from getting into the bearing room, Z shape sealing member include Z shape sealing washer 20 and seal installation groove 11, seal installation groove 11 sets up at shaft end gland 2 inner walls, seal installation groove 11 and bearing keep off the ring 3 outer wall with the bearing and form the Z shape sealed chamber, Z shape sealing washer 20 is installed in the Z shape sealed chamber, the lip of Z shape sealing washer outwards, also prevent that the sparge water from getting into the bearing room when the Z shape sealing washer prevents that lubricating oil from revealing.

In order to enable the Z-shaped sealing ring to be sealed more tightly and accelerate the discharge of washing water, an inflatable drainage sealing structure is arranged between the shaft end gland 2 and the mechanical seal 4; as shown in fig. 1, the air inflation and drainage sealing structure includes an air intake hole 12, an air vent channel 13 and an air exhaust hole 14; the air inlet hole 12 and the air water discharge hole 14 are respectively arranged on the shaft end gland 2, the air inlet hole 12 and the air water discharge hole 14 are communicated with a ventilation channel 13, and the ventilation channel 13 is formed by a gap between the side wall of the shaft end gland 2 and the side wall of the transition flange 5; the vent channel 13 is communicated with the Z-shaped sealing cavity, and the lip of the Z-shaped sealing ring 10 faces the vent channel 13; in the operation process, gas enters the vent channel from the gas inlet and is discharged from the gas-water discharge hole to form a gas path, and the vent channel is communicated with the Z-shaped sealing cavity, and the lip of the Z-shaped sealing ring 20 faces the vent channel 13, so that in normal operation, the charged gas can extrude the Z-shaped sealing ring 20 to enable the Z-shaped sealing ring to be closed more tightly. When the mechanical seal is broken, the leakage of the flushing water can enter the ventilation channel and can rapidly discharge the hole from the gas-water outlet under the punching of the gas.

Because the connection part of the main shaft and the movable disc is a conical surface, the movable disc needs to be provided with power through large interference fit, and the movable disc needs to be pressed into the main shaft through hydraulic pressure when the movable disc is installed; because the amount of the movable disc that impresses is the interval value for the clearance between movable disc and mechanical seal becomes unsettled, so in order to ensure to seal all the time, mechanical seal is equipped with elastic sealing structure in the junction with the movable disc, as shown in fig. 3, elastic sealing structure includes sealing washer I15, two sealing washer II16 and sealing washer cutting ferrule 17, and sealing washer I15 is installed at the movable disc inner wall, and sealing washer cutting ferrule 17 floats and installs in mechanical seal's rotating part and prescribes sealing washer II16 at mechanical seal's rotating part, and sealing washer cutting ferrule 17 and sealing washer I15 contact, and sealing washer I15 and sealing washer II16 all adopt the O shape sealing washer.

The main shaft is inserted into the bearing chamber after being provided with the bearing, then the bearing baffle ring is sleeved on the main shaft and is in contact with the end surface of the bearing, then the shaft end gland is arranged, so that the shaft end gland is connected with the bearing chamber and the bearing baffle ring, the mechanical seal is sleeved on the main shaft after being provided with the transition flange and is connected with the shaft end gland, a gap is arranged between the transition flange and the shaft end gland, and the rotating part of the mechanical seal is in contact with the bearing baffle ring.

The bearing chamber, the shaft end gland, the transition flange and the static part of the mechanical seal are immobile relative to the main shaft, and the main shaft drives the bearing, the bearing retaining ring and the rotating part of the mechanical seal to rotate.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.